Sliding window



A. HERMAN SLIDING WINDOW Nov. 3, 1931'.

Filed Aug. 1l, 1930 Patented Nov. 3, 1931 UNITED STATESy ALEXANDERHERMAN, oF Sis-mmm, cfEIunxANif i t sLIDING wINnoW Application meaAugust 11, 1930, serial No.

This invention relates to a sliding window adaptedto be lowered into theparapet of the window with a covering ledge, adjustable in twopositions, mounted on the window I frame, and consists in this, that theledge is moved inwards or outwards when the window is raised andlowered, by positive guiding in the parapet of the window, being movedinwards by striking the parapet when the windowV is lowered, and beingmoved outwards by a spring when the window is raised7 so that themovement of the ledge is effected wholly by raising and lowering thewindow. Such an automatic adjustment is known in itself, but the ledgeis mounted on the parapet of the window and its positive connection withthe window frame is eected by special rack gearing. Moreover it projectswhen the window has been lowered and is then freely rotatable, since thepositive connection is broken.

Four constructional forms of the invention are illustrated in theaccompanying drawings in which Figure 1 is a vertical fragmentarysectional view through thewindow and paraet. f p Fig. 2 is a transversesectional view taken above the ledge.

Fig. 3 is a fragmentary vertical sectional view of a modified form ofthe invention.

Fig. 4 is a transverse sectional view taken above the ledge of Fig. 3.

Fig. 5 is a fragmentary vertical sectional view of another modified formofthe invention.

Fig. 6 is a similar view of another modied form of the invention.

In the construction according to Figures l and 2, a ledge b stretchingover the breadth of the window is jointed to the lower frame a of thewindow, e. g. a hollow metal frame, close to its lower edge, the ledgebeing guided in a vertical groove d, curved at the upper end, by lateralguiding rollers 0. The vertical part of the groove is inside the parapete of the window.

The mode of operation is at once clear from the drawings. Inl theposition shown in Figure 1,`the ledge b is held in its workingMaese-ang@ in Germany '.'rn'uarylza `1927.

position'by'jthe groove-d, while when the window is lowered, thekrollers c are first; pushed to the jendsof the grooves Vand the ledgeAbwithits axis' of rotation' isloweredl until it reaches thepositionshown in broken 65 lines in Fig. 1.1 f

* In the construction shown in Figs. 3 and 4, the covering ledgef isformed as asector'` which can swing about the point of nrotation g andwhich is mounted so `as to vslide ina slot h' in the frame a andis heldin the working -position, by a spring The sector is connected with thevaxis ofrrotation gby side walls Icfwhich bearagainstgtheguidingbar` bwhich is curved at the upper endmwith an' 65 oblique edge. When thevwindow islowered,

.the sector is pressed intothe framefa` by the guiding bars'.- g

I4 the "construction faccording'to the protecting-ledge m can swing,asin theotherV i' cases, but is held in` its working-positionfby aspringln. .-Whenthe window is lowered rollers on the ledge fmJ run onarail or onthe wall of the .parapet r.e of thewindow and turn the ledgem upwards.

In the construction according to Fig. 6, the ledge o is carried instraight guides p inl the interior of the frame a, and Vhas oblique Ysurfaces fl', by which it is pressed into theVv f frame when the windowis lowered, and when the window is raised to its highest position itispressed out b a s rin What I claim isip g 1. A. sliding window adaptedto be lowered into the parapet of the window, having a J covered ledgemounted on the window frame and meansfor guiding the free edge of theledge, to cause the same to alternately swing from a downwardly inclinedposition-to an upwardly inclined position.

2. A sliding window adapted to be loweredv into the parapet of thewindow, having -a covered ledge rotatably mounted on the window frame,and grooves in which the free M edge of the ledge engages for guidingthe -i same, to cause said ledge to swing alternately fromV a downwardlyinclined position to ank upwardly inclined position.

3. A sliding window adapted to be lowered intothe parapet of the window,having a covered ledge slidablymountedi on'theiwindow frame and meansmounted in the parapet for guiding the free edge of *he ledge, sidepieces onthe ledge and pivotally icon-` nected with'tleifraineandadaptedto "slide'on" the guiding means,l and .spring'fdeviceus conervnectingthe ledge. an d( window forfholding'.the ledgein Contact with theguilingfmeans..y v

;5. Aslidingwindow-adaptedto be lowered" covered ledge mounted onthewindow rame, and ,bars adaptedl for intimate engagement Vwith the ledgefor guidingtheg'free edge of the"- ledge duringfsliding movement of :thefwinl A dow;

. 61A siidingrwin'dow adfipteatoibe lowered' in#` the 'parapetf- 'aspring-actuated'. covering Y ledge mounted on the window,fsaid lcoveringledge'beinlg mounted'onthe windowin such c manner that the lowerf'sideofthe window is i entirely `:free Y- for fthe attachment oi supporte 7.A device accoiding to clailn chanacterized byV the Ifact that theV'fulcrumi of the covering 'ledge is locatedy onftle; frontfside'testimony whei'eof have'signed name toathisisp'ecitication.'^` v 1vAL'EXAND,ER 'Y

